Table Of Contents - Cirrus Logic CS44800 Manual

TABLE OF CONTENTS

1. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 8
SPECIFIED OPERATING CONDITIONS .............................................................................................. 8
ABSOLUTE MAXIMUM RATINGS ........................................................................................................ 8
DC ELECTRICAL CHARACTERISTICS ............................................................................................... 9
DIGITAL INTERFACE CHARACTERISTICS ........................................................................................ 9
PWM OUTPUT PERFORMANCE CHARACTERISTICS .................................................................... 10
PWM FILTER CHARACTERISTICS ................................................................................................... 11
SWITCHING CHARACTERISTICS - XTI ............................................................................................ 11
SWITCHING CHARACTERISTICS - SYS_CLK .................................................................................. 12
SWITCHING CHARACTERISTICS - PWMOUTA1-B4 ....................................................................... 12
SWITCHING CHARACTERISTICS - PS_SYNC ................................................................................. 12
SWITCHING CHARACTERISTICS - DAI INTERFACE ...................................................................... 13
SWITCHING CHARACTERISTICS - CONTROL PORT - I²C FORMAT ............................................. 14
SWITCHING CHARACTERISTICS - CONTROL PORT - SPI FORMAT ............................................ 15
2. PIN DESCRIPTIONS ........................................................................................................................... 16
2.1 I/O Pin Characteristics
3. TYPICAL CONNECTION DIAGRAMS
4. APPLICATIONS ................................................................................................................................... 23
4.1 Overview ....................................................................................................................................... 23
4.2 Feature Set Summary ................................................................................................................... 23
4.3 Clock Generation ........................................................................................................................... 24
4.3.1 FsIn Domain Clocking .......................................................................................................... 25
4.3.2 FsOut Domain Clocking ........................................................................................................ 25
4.4 FsIn Clock Domain Modules ......................................................................................................... 27
4.4.1 Digital Audio Input Port ......................................................................................................... 27
4.4.2 Auto Rate Detect .................................................................................................................. 31
4.4.3 De-Emphasis ........................................................................................................................ 31
4.5 FsOut Clock Domain Modules ....................................................................................................... 32
4.5.1 Sample Rate Converter ........................................................................................................ 32
4.5.2 Load Compensation Filter .................................................................................................... 32
4.5.3 Digital Volume and Mute Control .......................................................................................... 32
4.5.4 Peak Detect / Limiter ............................................................................................................ 33
4.5.5 PWM Engines ....................................................................................................................... 33
4.5.6 Interpolation Filter ................................................................................................................. 34
4.5.7 Quantizer .............................................................................................................................. 34
4.5.8 Modulator ............................................................................................................................. 34
4.5.9 PWM Outputs ....................................................................................................................... 34
4.5.10 Power Supply Rejection (PSR) Real-Time Feedback ........................................................ 35
4.6 Control Port Description and Timing ............................................................................................. 36
4.6.1 SPI Mode .............................................................................................................................. 36
4.6.2 I²C Mode ............................................................................................................................... 37
4.6.3 GPIOs ................................................................................................................................... 38
4.6.4 Host Interrupt ........................................................................................................................ 38
5. POWER SUPPLY, GROUNDING, AND PCB LAYOUT ....................................................................... 39
5.1 Reset and Power-Up ..................................................................................................................... 42
5.1.1 PWM PopGuard® Transient Control .................................................................................... 42
5.1.2 Recommended Power-Up Sequence ................................................................................... 42
5.1.3 Recommended PSR Calibration Sequence ........................................................................ 43
5.1.4 Recommended Power-Down Sequence .............................................................................. 44
6. REGISTER QUICK REFERENCE ........................................................................................................ 46
7. REGISTER DESCRIPTION .................................................................................................................. 50
7.1 Memory Address Pointer (MAP) .................................................................................................... 50
DS632F1
................................................................................................................ 20
..................................................................................... 21
CS44800
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